Iron sight zero question
I have a 20 inch M16A4(ish) rifle that I keep with iron sights to practice irons and to have a no batteries needed rifle.
I had decided to do the USMC 300 yard zero and zero'd at the near distance of 36 yards.
However I put my rear sight on Z for zeroing since what I read online says to do that. I recently read the USMC manual for zeroing online and it says to stay at 3/6.
So the question is, how far off am I? Assuming I zeroed good and "should" have been on at 300, how much did zeroing at Z mess that up?
EDIT: ammo is 55 grn ball.
C co 1/30th Infantry Regiment
3rd Brigade 3rd Infantry Division
2002-2006
OIF 1 and 3
IraqGunz:
No dude is going to get shot in the chest at 300 yards and look down and say "What is that, a 3 MOA group?"
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